efd7fe68f0
This implements the known parts of the Realtek 4 byte tag protocol version 0xA, as found in the RTL8366RB DSA switch. It is designated as protocol version 0xA as a different Realtek 4 byte tag format with protocol version 0x9 is known to exist in the Realtek RTL8306 chips. The tag and switch chip lacks public documentation, so the tag format has been reverse-engineered from packet dumps. As only ingress traffic has been available for analysis an egress tag has not been possible to develop (even using educated guesses about bit fields) so this is as far as it gets. It is not known if the switch even supports egress tagging. Excessive attempts to figure out the egress tag format was made. When nothing else worked, I just tried all bit combinations with 0xannp where a is protocol and p is port. I looped through all values several times trying to get a response from ping, without any positive result. Using just these ingress tags however, the switch functionality is vastly improved and the packets find their way into the destination port without any tricky VLAN configuration. On the D-Link DIR-685 the LAN ports now come up and respond to ping without any command line configuration so this is a real improvement for users. Egress packets need to be restricted to the proper target ports using VLAN, which the RTL8366RB DSA switch driver already sets up. Cc: DENG Qingfang <dqfext@gmail.com> Cc: Mauri Sandberg <sandberg@mailfence.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
4.1 KiB
SPDX-License-Identifier: GPL-2.0-only
config HAVE_NET_DSA def_bool y depends on INET && NETDEVICES && !S390
Drivers must select NET_DSA and the appropriate tagging format
menuconfig NET_DSA tristate "Distributed Switch Architecture" depends on HAVE_NET_DSA depends on BRIDGE || BRIDGE=n select GRO_CELLS select NET_SWITCHDEV select PHYLINK select NET_DEVLINK help Say Y if you want to enable support for the hardware switches supported by the Distributed Switch Architecture.
if NET_DSA
tagging formats
config NET_DSA_TAG_8021Q tristate select VLAN_8021Q help Unlike the other tagging protocols, the 802.1Q config option simply provides helpers for other tagging implementations that might rely on VLAN in one way or another. It is not a complete solution.
Drivers which use these helpers should select this as dependency.
config NET_DSA_TAG_AR9331 tristate "Tag driver for Atheros AR9331 SoC with built-in switch" help Say Y or M if you want to enable support for tagging frames for the Atheros AR9331 SoC with built-in switch.
config NET_DSA_TAG_BRCM_COMMON tristate default n
config NET_DSA_TAG_BRCM tristate "Tag driver for Broadcom switches using in-frame headers" select NET_DSA_TAG_BRCM_COMMON help Say Y if you want to enable support for tagging frames for the Broadcom switches which place the tag after the MAC source address.
config NET_DSA_TAG_BRCM_PREPEND tristate "Tag driver for Broadcom switches using prepended headers" select NET_DSA_TAG_BRCM_COMMON help Say Y if you want to enable support for tagging frames for the Broadcom switches which places the tag before the Ethernet header (prepended).
config NET_DSA_TAG_GSWIP tristate "Tag driver for Lantiq / Intel GSWIP switches" help Say Y or M if you want to enable support for tagging frames for the Lantiq / Intel GSWIP switches.
config NET_DSA_TAG_DSA tristate "Tag driver for Marvell switches using DSA headers" help Say Y or M if you want to enable support for tagging frames for the Marvell switches which use DSA headers.
config NET_DSA_TAG_EDSA tristate "Tag driver for Marvell switches using EtherType DSA headers" help Say Y or M if you want to enable support for tagging frames for the Marvell switches which use EtherType DSA headers.
config NET_DSA_TAG_MTK tristate "Tag driver for Mediatek switches" help Say Y or M if you want to enable support for tagging frames for Mediatek switches.
config NET_DSA_TAG_KSZ tristate "Tag driver for Microchip 8795/9477/9893 families of switches" help Say Y if you want to enable support for tagging frames for the Microchip 8795/9477/9893 families of switches.
config NET_DSA_TAG_RTL4_A tristate "Tag driver for Realtek 4 byte protocol A tags" help Say Y or M if you want to enable support for tagging frames for the Realtek switches with 4 byte protocol A tags, sich as found in the Realtek RTL8366RB.
config NET_DSA_TAG_OCELOT tristate "Tag driver for Ocelot family of switches" select PACKING help Say Y or M if you want to enable support for tagging frames for the Ocelot switches (VSC7511, VSC7512, VSC7513, VSC7514, VSC9959).
config NET_DSA_TAG_QCA tristate "Tag driver for Qualcomm Atheros QCA8K switches" help Say Y or M if you want to enable support for tagging frames for the Qualcomm Atheros QCA8K switches.
config NET_DSA_TAG_LAN9303 tristate "Tag driver for SMSC/Microchip LAN9303 family of switches" help Say Y or M if you want to enable support for tagging frames for the SMSC/Microchip LAN9303 family of switches.
config NET_DSA_TAG_SJA1105 tristate "Tag driver for NXP SJA1105 switches" select NET_DSA_TAG_8021Q select PACKING help Say Y or M if you want to enable support for tagging frames with the NXP SJA1105 switch family. Both the native tagging protocol (which is only for link-local traffic) as well as non-native tagging (based on a custom 802.1Q VLAN header) are available.
config NET_DSA_TAG_TRAILER tristate "Tag driver for switches using a trailer tag" help Say Y or M if you want to enable support for tagging frames at with a trailed. e.g. Marvell 88E6060.
endif